Disk drive having a resilient structure for sealingly closing a tray opening

1. A disk drive comprising: an outer casing having a front side formed with a tray opening; a tray disposed within said outer casing and movable with respect to the latter between a retracted position, in which said tray is retracted into said outer casing, and an extended position, in which said tray is protruded outwardly from said outer casing via said tray opening; a resilient structure including a mounting part fixed to a middle section of a front side of said tray and left and right lateral plates extending from two opposite ends of said mounting part in a direction parallel to said front side and cooperating with said front side to define a gap between each of said left and right lateral plates and said front side, each of said left and right lateral plates having a distal end portion; and a tray cover attached to said resilient structure, and having left and right fastening members respectively fixed to said distal end portions of said left and right plates, whereby, when said tray is disposed in said retracted position, said tray cover abuts sealingly against the periphery of said tray opening in said front side of said outer casing.

2. The disk drive according to claim 1 , wherein each of said distal end portions is formed with a through hole, said left and right fastening members respectively extending into and engaging peripheries confining said through holes.

3. The disk drive according to claim 2 , wherein said resilient structure further includes left and right engaging tubes extending respectively into said gap from said peripheries of said through holes in said left and right lateral plates.

4. The disk drive according to claim 3 , wherein said tray cover has a rear side wall facing said left and right lateral plates, each of said left and right fastening members including two resilient parallel arms that extend from said rear side wall of said tray cover and that are formed with barbed ends hooking said engaging tubes of said left and right lateral plates.

5. The disk drive according to claim 1 , wherein said tray cover has a rear side wall facing said left and right lateral plates and left and right resilient biasing strips that are disposed respectively adjacent to said left and right fastening members and that protrude outwardly from said rear side wall to press against said left and right lateral plates of said resilient structure to result in a resilient force between said tray cover and said resilient structure.

6. The disk drive according to claim 1 , wherein said tray cover has a rear side wall facing said resilient structure and two intermediate resilient biasing strips that are disposed on a middle section of said side wall of said tray cover and that protrude outwardly from said rear side wall to press against said mounting part of said resilient structure to enhance said resilient force between said tray cover and said resilient structure.

7. The disk drive according to claim 1 , further comprising a decorated cover attached to said tray cover in order to conceal said tray cover behind said decorated cover.

8. The disk drive according to claim 1 , wherein said outer casing has a front panel defining said front side, said tray opening being formed through said front panel.

9. The disk drive according to claim 1 , wherein said resilient structure is integrally formed with said tray.

10. The disk drive according to claim 1 , wherein said tray and said resilient structure are made from a material group consisting of POM (polyoxymethylene), Nylon and PC (polycarbonate).